The Do Not Call list does not require names, just phone numbers, so I don’t see how this is a workaround. The best workaround is a foreign company doing the calling.
I try to let the poor person know their cell # has been hijacked. It's only happened a couple of times but is becoming more common.
I usually rely on the caller ID and don’t answer. When it gets really annoying, I will pick up and pretend that I can’t hear them. Saying Hello over their speil usually causes them to hang up.